Apparatus for forming watchcase-pendants



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C W BUTTS APPARATUS FOR FORMING WATGHGASE PENDANTS. No. 492,739.Patented Feb. 28, 1893. I1 7 I 1 A v A ".h A A m m n m u m v 0 n L 5 5.5 E

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0. W. BUTTS. .7 APPARATUS FOR FORMING WATGHOASB PENDANTS.

No.- 492,739. Patented Feb. 28, 1893.

WEE 1155555: Y I 175' UNITED STATES PATENT OFFICE.

CHARLES W. BUTTS, OF SAG HARBOR, NEW YORK, ASSIGNOR TO THE FAI-IYS WATCHCASE COMPANY, OF NEWV YORK.

APPARATUS FOR FORMING WATCHCASE-PENDANTS.

SPECIFICATION forming part of Letters Patent No. 492,739, dated February28, 1893. Application filed March 19, 1892. Serial No. 425,585. (Nomodel.)

To aZZ whom it may concern:

Be it known that I, CHARLES W. BUTTS, a citizen of the United States,residing at Sag Harbor, Suffolk county, New York, have invented certainnew and useful Improvements in Methods of and Apparatus for FormingWatchcase-Pendants, of which the following is a specification.

A watch-case pendant is usually formed hollow to receive 'the stem,provided with an angular shoulder or foot which seats against thecase-center and with ears, one 011 each side, to receive the ends of thebow.

The present invention relates to a process of and machine for stampingthe pendant, with its foot and ears, from a suitably formed blank.

. In the accompanying drawings, Figure I is a sectional elevation of theimproved machine,a pendant blank being in position to be operated on andthe punches raised. Fig.

II is a-sectional elevation of the machine with punches depressed andacting upon a blankthe plane of section being at'a right angle to thatat which Fig. I is taken. Fig. III is a perspective view of the innerpunch and the pendant as formed thereby. Fig. IV is an elevation of oneform of pendant.

The machine comprises a three-part matrix or die for holding the pendantblank during the operation, and a two-part punch which acts with the diein holding the blank and at the same time upsets the blank into theproper shape.

Referring to the drawings, 1 is a bolster, which may be of cast iron andwhich has a flaring seat for a correspondingly shaped cup 2. Thesemembers fit snugly and solidly together so that there is no movement ofthe cup in the bolster during the operation of the machine. The cup 2 isfixed to bolster 1 by the stud 3 whose screw-threaded extension 4-passesthrough the bottoms of both cup, and bolster and has screwed thereon,below the bolster, a nut 5. The recessed interior of cup 2 is made largeenough to receive, betweenthe cup 2 and stud 3 a spiral spring 6, and isshouldered about half-way up as shown at 7. In the enlarged annularspace above said shoulder I arrange a ring or die receiver 8, which,during the inaction of the machine,

is supported, in the position shown in Fig. I, by the spring 6. Itsdownward movement is limited by a steel ring 9 placed on the shoulder 7.The thickness of this ring is readily adjusted to the amountofdepression desired for the receiver 8. If found a trifle too thick, itis ground down until it stops the receiver at precisely the right point.The stud 3 has at top a flaring seat for the pad or lower die' and thematrices for the pendant ears are shown at 11 13 is the outer punch andhalf die holder. (The details of the press employed for supporting andoperating the apparatus are not shown in the drawings. They may be ofany desired construction.)

14 is the inside or upsetting punch and 15 is its holder arranged tomove within and independently of the outside punch 13. The punch 14. iskeyed or otherwise attached to the holder 15 so as not to turn thereinand its shape may be best understood from Fig. III. Its lower end 16 isof smalldiameterthe same as the hollow interior of the pendant blank,and on two sides this diameter is continued up to the shoulder 17, whichduring the operation of the machine do not quite descend into contactwith the pendant blank. But on the remaining two sides, the punch is asshown at 18 shouldered out, below the shoulders 17 to a diameter equalto the diameter above said shoulders and the part having shoulders 18 isof greater diameter than the narrow or small end 16. By reference toFig. 11 it will be seen that the punch 14 is so mounted that theshouldered portions 18, 18 enter the halfdies immediately over and inthe vertical plane of the matrices 11 therein, which form the pendantears.

A (Fig. 1) represents the pendant blank in the form in which it isprepared in readiness to be treated by my process and machine,while B(Figs. II and III) shows the pendant after treatmentin my machine.TheblankA is made longer than the pendant is intended to be, and asusual, it has the bore afor the stem and the crown stud. It has also thebead b which usually terminates the barrel portion of the completedpendant. The greater length of metal below this bead goes to supply themetal for the foot of the pendant, while the greater length of the metalabove the bead, supplies the material for the bow ears. The blank beingin this shape and the parts of the machine in the position shown in Fig.I, the blank is put in and the half-dies closed. The bead Z) entersarecess 19 prepared for it in the matrix of the half-dies and securelyholds the blank during the operation of the machine. The outer punch 13is now brought down and its tapering seat 13 surrounds the half-dies andfirmly holds them together. movement, it forces down the half-dies,their contained pendant blank A, and the receiver 8, against the actionof spring 6, until arrested by the striking of receiver 8 on the stopring 9. During this movement the part of the blank A below the bead b ispartly fiattened, until when the matrix 11 in the halfdies coincideswith the matrix 11 in the pad or lower die and forms therewith aflattened recess, the lower part of the blank is forced to flow into andoccupy the same and there is thus formed on the pendant the rounded footor base piece (I, immediately above the boss which when the pendantis tobe applied to a case is adapted to seat in the case center. WVhile thisaction is going on, the inside or upsetting punch 1a is brought down bythe action of the press. Its narrow lower end enters the bore of theblank and shoulders 18 rest upon upper edge of blank taking part of thepressure from the bead. The shoulders 18 on coming in contact with theupper edge of the blank, press their way into the same, forcing down themetal on each side of the blank and causing it to flow into and fill thematrices 11 in the half dies and so form the ears fifor the bow. Theposition of the parts of the machine and the shape of the pendant is nowshown by Fig. II. The punches being then raised, the spring 6 forces upthe receiver and half dies, the half-dies are taken out and separatedand the pendant removed. Its shape is shown in Fig. III. To complete it,the lugs g, left by the forcing of the shoulders 18 into the metal ofthe blank, are cut away.

hile I have shown in Fig. I, the whole of the pendant blank above thebead b, of equal length, it is obvious that the only part which has tobe of greater length than the barrel of the finished pendant, is thepart which is to be crushed down to form the ears for the bow. So thatinstead of having the whole of the blank A, above the head I) of fulllength, such Continuing its blank may be provided with ears 9 Fig. IVprojecting beyond the end of the blank on the sides in which the earsare to be formed. When the shoulders 18 of the upsetting punch strikethese projecting lugs, they will crush them down to a level withtheremaining end of the pendant, causing the metal of the lugs to flow andform the ears of the bow.

Having thus described my invention, the

following is what I claim as new therein and desire to secure by LettersPatent:

1. The process of forming a watch case pendant having ears for the bow,consisting 1n forming a blank longer than the pendant 1s to be, and thencrushing down that portion of the blank that is in line with the part toform the ears and causing that portion of the blank to flow to form theears and replace the metal that is forced out to form the ears,substantially as set forth.

2. The process of forming a watch case pendant, which consists informing a blank of greater length than the pendant is intended to have,and then crushing down the blank to form the pendant foot and at thesame operation crushing down that portion of the blank that is in linewith the part to form the ears and causing that portion of the blank toflow to form the ears and replace the metal that is forced out to formthe ears, substantially as set forth.

3. The pendant forming machine comprising in combination, a lower diehaving a matrix to form the lower half of the pendant foot, the upper orhalf-dies, having a coinciding similar matrix for the other half of thefoot and supported normally above and separated from said lower die,said upper diesclamping the blank to press it longitudinally while thefoot is being made and a suitable punch arranged'and adapted to operate,substantially as set forth.

4. In a pendant forming machine the com bination of the lower pad or die10 having matrix 11, the spring supported upper or half dies 12 having arecess to receive a bead or projection on the blank to be operated uponand the punch 13 having a movement independent of the upper dies,substantially as set forth.

5. In a pendant forming machine the combination of the lower dies 10,the spring supported upper or half die 12, and the variable stop 9therefor.

6. The combination ofcthe die containing cup 2, having shoulder 7, thestud 3, fixed thereon, the pad or lower die 10, supported on stud 3, thereceiver 8, upper or half dies 12 carried by said receiver, and thespring 6 whereon said receiver is supported substantially as set forth.

'7. The combination of the dies 12 having matrices 11 for the bow ears,and a suitable punch constructed with shoulders in line only with thatportion of the blank that is to have ears to longitudinally crush in themetal of a pendant inserted in said dies and cause the metal thereofthat is in line only with said matrices to flow into said matrices,substantially as set forth.

8. The combination of the lower die 10 having matrix 11, thespring-supported upper or half dies 12 having matrices 11 and 11 andbeing superposed over thelower and the punch 14: having the narrow lowerend and suitably shouldered to longitudinally crush the edge of apendant inserted in said dies 12 substantially as set forth. 9. Thecombination of the lower die 10, the spring supported tapering upper orhalf dies 12 superposed over the lower die said dies having matrices 11,11", 11 and the two part punch of which the outer punch 13 has flaringseat 13 and the inner punch 14 is adapted to enter said upper dies andis suitably shoulset forth.

' CHARLES W. BUTTS.

Witnesses:

WILLIAM E. DENISON, THOMAS F. BISGOOD.'

